Adjustable apparatus for gas machines and mixers



(m Model) J. P. GLHFORD;

ADJUSTABLE APBARATUSPOR GAS MACHINES AND MIXERS. No. 317,975. Patented ay 19,1885.

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y Armm ADJUSTABLE APPARATUS FOR GAS MACHINES AND VHXERS.

SPECIFICATION forming part of Letters Patent` No. 317,975, dated May 19, 1885.

Application filed April l1, 1884. (No model.)

.To LZZ whom t may concern.-

Beit known that I, JAMEs P. CLIFFORD, a citizen of the United States, residingat New Haven, iu the county of New Haven and State -of Connecticut, have invented certain new and useful Improvements in Adjustable Apparatus for Gas Machines and Mixers, of which the following isaspeciication, reference being had therein to the accompanying drawings.

This invention relates to that class of airgas machines, so termed, in which atmospheric air is charged or saturated with the vapor of alight hydrocarbon, such, for instance, as gasoline. In such apparatus it frequently occurs that when the generatoror tank is rst filled the air becomes charged with a proportion of the hydrocarbon vapor in excess of what is required for the grade of illuminatingfgas, which not only results in the waste of the hydrocarbon mate rial, but in a smoky flame.

The object of this invention is to producea convenient and effective means of diluting the gas when thus charged to excess, and it comprises certain novel combinationsv of parts, whereby an additional quantity of atmospheric air may be mingled with the gas as the same is passed through the conducting-pipes toward the burners, all as hereinafter described and claimed.

The gas-machine itself may be of any ordiy nary or suitable construction, provided with a pump, which forces the air to the generator to be carbureted, thence to the building to be lighted to be consumed at the burner.

It matters not which way the gas-machine is set up, whether it be on the pressure or induction plan, the operation and results of the mixer are precisely the same. All the difference there is between the pressure plan of operating a gasvmachine and the induction plan of operation is that on the pressure pla-n the gas is forced by the air-pump directly from the generator buried inthe ground to the conl ducting and branch pipes in the building to be consumed at the burners. The induction plan is to induct the air into the carburetor and the resulting gas into the pump in the cellar of the building lighted. The gas is then delivered from the pump in the cellar of the building lighted to the burners to be consumed.

production of a high 1 In the accompanying drawings, Figure l represents a side elevation of my present im- `respectively, an end view and a longitudinal section ofthe shaft and cone-pulleys. Arepresents in elevation the idler bearing-block Fig. 5

and bearingspindle.

A represents the air-pu mp, which forces the air through the pipe B to a generating-tank, where it becomes thoroughly saturated with the vapor of the gasoline, thence through the conducting pipe or main E, which connects with the usual or any suitable burner by branch pipes or connections.

Motion is imparted to the moving parts of the pump A by means of a drum, F, actuated by a cord or wire rope, G, having aweight attached to its free end, the object ot' thus weighting the cord being to cause the automatic and gradual unwinding of said rope from the drum and the consequent gradual revolution of the drum F. The-cord or rope G passes over a pulley, I, which is mounted in a bracket or support, A', suspended from or attached to any suitable part of the building or room in which the apparatus is located. Upon the shaft J of the drum F-that is to say, of the pump A-is a sprocket-wheel, K, which is connected by a chain belt to a series ofsprocket-wheels of unequal circumference arranged conically upon the shaft of the mixer O, which may be of the same construction as the pumpA, but of smaller size, and to which an inlet or air-in duction pipe conveys the air from the outer atmosphere.

The pump Aand the gas-machine itself being putin operation in the usual manner, the movement of the drum F, which actuates the moving parts of the pump A, which actuates in like manner the moving parts of the smaller pump O, thereby causing the smaller pump O to draw in atmospheric air through the airiuduction pipe, and expel through the pipe Q into-the connecting pipe or main E simultaneously with the liow through the latter of the carbureted air, whereupon the air from the pump O reduces the relative proportion of the hydrocarbon in the carbureted air to the degree requisite in a rich but clear burn- IOO ing gas, the proportion of air thus admitted to the pipe E being controlled by the pump A in proportion to the amount of gas being used. It matters not whether there is one burner being used or ten, orvthe full capacity of the machine, the proportion of air and gas will always be the same. There are no valves to get out of order, or any other complicated contrivance. The operation of the pump O depends altogether on the pump Ato operate it. The pump A will not move unless there is gas being used. When the proportion of hydrocarbon in the gas or carbureted air in the generator reaches or falls below the proportion required for a rich and clear burning gas, the speed of the pump O can be instantly reduced by an adjustable arrangement.

The sprocket-wheels L on the shaft N ofthe pump O are arranged in different sizes, so that they can be connected to the chain belt M, which is controlled by the pump A, so that the pump O can be made to revolve six revolutions to one of the pump A, or in any proportion that is necessary to produce the required results at the burner. The gas thus made is delivered tol all parts of the premises alike, every burner or gas-light being controlled at one place--namely, at the mixer.

In the arrangement shown in the drawings, the ropes or chains are rst coiled upon the drums upon the shafts of the respective pumps by turning the hand-crank. (Shown in Fig. l.) When the ropes are thus coiled upon their respective drums, said drums may be held from further movement by means of a pawl and ratchet or other well-known means. rIo each rope, at the end opposite to that attached to the drums, is attached a weight which has a constant tendency to draw down the ropes and unwind them from and thus rotate the drums and the shafts of the respective pumps. Direct connection between the shafts of the respective pumps is secured by means of the chain belt M, which gears with thesprocket! wheel K on the shaft of the pump A, and with an idler or idlers, S, having loose bea-ring in a slotted arc, S, and with the sprocket-wheelsL on the shaft N of the supplemental pump O. The speed at which the shaft N of the pump O revolves relatively to the speed of the shaft J of the pump A can be readily regulated by shifting the conically-arranged cluster of .sprocket-wheels L either forwardly or rearwardly along the shaft N, so as to bring either one or the other into engagement with the belt. By constructing these sprocket-wheels of different diameters different degrees of rotation can readilyV be imparted to the shaft N of the secondary or supplemental air or gas forcing apparatus O, depending upon which wheel is placed in engagement with the belt M. This regulation of speed can be readily effected at any time during the operation of the apparatus, as the cluster of wheels L is held upon the shaft N by friction, and can be readily slid back or forward, as desired. When the position of the belt M is changed from one to another sprocket-wheel L, the idler or idlers S are slid along within the slotted arc S', by which means the belt is either slackened or tightened, so as to secure the requisite amount of tension thereon.

Having thus described my invention, I claiml. In an air-and-gas-mixing machine, the

combination, with an air-pump and an auXiliary air-pump, each having outwardly-proj ecting shafts, provided with means for rotating the same in one direction, and automatically rotating the same in a reverse direction, of a series of sprocket-wheels of unequal diameter mounted upon the shaft of one of said pumps, a belt adapted to connect said sprocket-wheels and the shaft of the other pump, and an idler and slottedarc for the purpose of adjusting the belt to the several sprocket-wheels and regulating its tension, substantially as and for the purpose set forth.

2. The combination, in an air-and-gas-mixing machine, ofan air-pump, A, having a shaft, J, extending outwardly therefrom, drum, F, mounted upon said shaft, supplemental air pump or mixer O, having an outwardly-extending shaft provided with a drum, ropes, or chains connected at one end with said drums, and supported upon suitable pulleys, and. having at their opposite ends weights to secure the uncoiling of said-ropes from the drums, a series of conically-arranged sprocket-Wheels mounted upon the shaft of one pump, a belt connecting said sprocket-wheels with the shaft of the other pump, and means, substantially as described, for shifting said belt from one sprocket-Wheel to another and securing it in position, substantially as and for the purpose set forth.

y In testimony whereof Iaftix my signature in presence of two witnesses.

JAMES I?. CLIFFORD. Witnesses:

JAMEs D. KING, C. J. EMMoNs.

ICD 

